4S 10A JLGW Li-ion Battery Management System (BMS) with Balance

Overview:
The 4S 10A JLGW Li-ion BMS is a protection and management solution for lithium-ion battery packs configured in 4 cells in series (4S). Designed to handle up to 10A continuous current, it includes passive cell balancing and multiple safety features, making it ideal for medium-power applications like e-bikes, tools, and energy storage.

Key Specifications:

• Battery Configuration: 4 cells in series (4S)

• Nominal Voltage: 14.8 V (3.7 V per cell × 4)

• Maximum Charge Voltage: 16.8 V (4.2 V per cell max)

• Discharge Cutoff Voltage: ~2.8 V per cell (~11.2 V total)

• Continuous Discharge Current: 10 A

• Overcurrent Protection: Typically triggers at 15–20 A

• Short Circuit Protection: Yes – fast response with automatic recovery

• Cell Balancing: Passive balancing, 30–60 mA per cell

• Quiescent Current: <50 µA (ultra-low standby power consumption)

• Operating Temperature Range: -20°C to +60°C

• Form Factor: Compact PCB design (sizes may vary by batch or version)

• Protection Features:

  • Overcharge protection

  • Over-discharge protection

  • Overcurrent protection

  • Short circuit protection

  • Passive cell balancing

  • Temperature protection (optional, model-dependent)

Additional Features:

• JLGW Quality: Durable construction using high-grade MOSFETs and ICs

• Battery Type Compatibility: Designed for Lithium-ion (Li-ion) and NMC chemistry (Not suitable for LiFePO₄ unless specified)

• Port Design: Typically a common port (same port for charging and discharging), unless specified as separate port version

• Wiring Interface: Solder pads or connector-based depending on model version

Applications:

• E-scooters / E-bikes (low to medium power)

• Portable power banks

• Solar charging systems

• LED lighting systems

• Robotics and DIY electronics

• Backup battery packs